We've got a Raymond pallet jack that keeps throwing the indicated error codes during operation. We don't seem to have a proper service manual available, so I'm having a hard time figuring out what to do with these. From what I've found, it looks like it's probably a CAN-bus issue, but the wiring and harnesses seem to be in good shape. Is there somewhere I can find the error codes online, or do I need to get a service manual to be able to check them? Any help or suggestions appreciated.